19 years ago
I need to drill some holes into steel balls. The problem is
that the balls need to be polished because they're going to
be used in ball-and-socket joints.
My problem is that I'm unable to find any polished but
unhardened steel balls, so I'm giving up on that now (I tried
unhardened balls from 3 manufacturers, and they're not good
enough). Instead I want to concentrate on getting a drill
through regular (hardened) ball bearings which are abundant
Has anybody tried his/her hands at this yet? Before I start
spending lots of cash on carbide centering drills and drill
bits I'd like an opinion or two from you guys. I'm going to
use a lathe for drilling.
Whatever method is feasible, it'd also have to be rather fast
and easy since I'm looking at having to perforate around 1000
balls of sizes between 3/16 and 3/8. Drill diameters are 2
and 3 mm.